. a makeup mirror has radius of curvature 54 cm. how far is the upright image from your face if it is 6 times larger?

Collected data plays a crucial role in evaluating whether the criteria for success have been met. By analyzing the collected data, one can assess the progress made towards achieving the desired goals and determine if the criteria have been fulfilled.

Data provides an objective measure of performance or outcomes, allowing for an evidence-based assessment of success. It helps to quantify and track key metrics or indicators related to the criteria for success. By comparing the actual data with the predetermined benchmarks or targets, one can determine if the criteria have been met or if further improvements are required.

Data analysis also enables the identification of trends, patterns, and correlations, providing insights into the factors influencing success. It helps in identifying areas of strength and areas that need improvement. Additionally, data can be used for comparative analysis, benchmarking against previous periods or similar projects, to gain a broader perspective on success.

In summary, collected data provides an objective basis for evaluating progress and success by comparing actual performance against predetermined criteria, identifying areas of improvement, and gaining insights for future decision-making.

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It is not possible to add two vectors of unequal magnitudes and get a resultant vector with a magnitude of zero, but it is possible to add three vectors of equal magnitudes and get a resultant vector with a magnitude of zero when they form a closed triangle or polygon.

No, it is not possible to add two vectors of unequal magnitudes and get a resultant vector with a magnitude of zero. When adding vectors, their magnitudes contribute to the magnitude of the resultant vector. If the magnitudes are unequal, the resultant vector will have a magnitude that is not zero.

The magnitudes of the vectors determine the strength or intensity of their individual contributions to the resultant vector. In order for the magnitudes to cancel out and result in a zero magnitude, the vectors must have equal magnitudes and opposite directions.

On the other hand, it is possible to add three vectors of equal magnitudes and get a resultant vector with a magnitude of zero. This occurs when the three vectors form a closed triangle or polygon. Each vector can cancel out the contribution of the other two vectors, resulting in a net magnitude of zero for the resultant vector.

For this to happen, the vectors must have equal magnitudes and be arranged in such a way that their directions form a closed loop. This condition allows the vectors to completely offset each other, resulting in a resultant vector with zero magnitude.

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The Correct option is D. Earth's Moon, by Sir Isaac Newton object appears in these sketches — drawn as seen through one of the first telescopes, in the early 17th century.

Isaac Newton is widely regarded as one of the most influential physicists in history. He made groundbreaking contributions to our understanding of the laws of motion, gravity, and optics, which laid the foundation for modern physics.

Newton's three laws of motion describe how objects move in response to forces, while his law of universal gravitation explains how all objects in the universe are attracted to each other. His work on optics included the development of the reflecting telescope and the discovery of the composition of white light through the use of prisms.

Newton's contributions to physics were based on his careful observations and mathematical analysis, which allowed him to formulate precise laws that could be used to make predictions about the behavior of physical systems.

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Answer:

The time taken to reach the maximum height is 3.20 seconds

Explanation:

The given parameters are;

The initial height from which the volcano erupts the lava bomb = 64.4 m

The initial upward velocity of the lava bomb = 31.4 m/s

The acceleration due to gravity, g = 9.8 m/s²

The time it takes the lava bomb to reach its maximum height, t, is given by the following kinematic equation as follows;

v = u - g·t

Where;

v = The final velocity  = 0 m/s at maximum height

u = The initial velocity = 31.4 m/s

g = The acceleration due to gravity = 9.8 m/s²

t = The time taken to reach the maximum height

Substituting the values gives;

0 = 31.4 - 9.8 × t

∴ 31.4 = 9.8 × t

t = 31.4/9.8  ≈ 3.204

The time taken to reach the maximum height rounded to three significant figures = t ≈ 3.20 seconds

The value of the angular acceleration of the disk when it is released is 14.6 rad/s^2

To solve this problem, we can use the conservation of energy principle. The potential energy stored in the compressed spring is converted into the kinetic energy of the disk as it rolls without slipping.

The potential energy stored in the spring is given by:

U = (1/2) k d^2

where k is the spring constant and d is the distance the spring is compressed.

The kinetic energy of the disk is given by:

K = (1/2) I w^2

where I is the moment of inertia of the disk and w is its angular velocity.

Since the disk rolls without slipping, the linear velocity of the disk is related to its angular velocity by:

v = R w

where R is the radius of the disk.

The total energy of the system is conserved, so we can write:

U = K

Substituting the expressions for U and K, we get:

(1/2) k d^2 = (1/2) I w^2

Solving for w, we get:

w = sqrt((k d^2) / I)

To find the moment of inertia I, we can use the formula for the moment of inertia of a solid disk:

I = (1/2) m R^2

Substituting the given values, we get:

I = (1/2) (40 kg) (0.3 m)^2 = 1.8 kg m^2

Substituting this value and the given values for m, k, and d into the expression for w, we get:

w = sqrt((50 N/m) (0.4 m)^2 / 1.8 kg m^2) = 2.17 rad/s

Finally, we can find the angular acceleration alpha using the formula:

alpha = w^2 / R

Substituting the value of w and R, we get:

alpha = (2.17 rad/s)^2 / 0.3 m = 14.6 rad/s^2

Therefore, the value of the angular acceleration of the disk when it is released is 14.6 rad/s^2.

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It will take 472.35 seconds to decrease from 4.00 m to 0.350 m, if it takes 110 seconds to go from 1.0 m to decrease to 0.150 m.

Total distance decrease, d₁ = 1 - 0.150 = 0.85 m

Total time taken to decrease that distance, T₁ = 110 sec

Time taken to decrease unit distance, t₁ = 110/0.85 = 129.4 sec

Now, decrease in distance, d₂ = (4.0 - 0.350) = 3.65 m

Total time requires to decrease that distance, T₂ = 3.65 × 129.4

T₂ = 472.35 sec.

We can also use interpolation method to calculate this:

T₂ = 110 × (4.0 - 0.35)/(1 - 0.150) = 472.35 sec.

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"Constant velocity" means that there is no acceleration. Acceleration = 0 .

So its graph is zero at every time. The line on the graph lies on the X-axis.

Option A and C.  A) Marie operates at a greater power level than Pierre and C) Marie does more work than Pierre.

Work is done when a force is used to displace an object from its position. It is the outcome of force applied on an object and the displacement it causes. Power is the amount of work done per unit time, or the rate at which work is done. It is the measure of how quickly work can be done. It is the rate at which energy is transformed, such as from electricity to heat, light, or motion.
To calculate work and power, we must use the following formulas:
Work = Force x Distance
Power = Work/Time
For Pierre, the work done is 60 kg x 1 m = 60 kg m.

The power is 60 kg m/3 s = 20 kg m/s.
For Marie, the work done is 24 x 2.5 kg x 1 m = 60 kg m.

The power is 60 kg m/2 min = 0.5 kg m/s.
Since Marie's power is greater than Pierre's (0.5 kg m/s > 20 kg m/s), A) Marie operates at a greater power level than Pierre is true. Additionally, since Marie does more work (60 kg m) than Pierre (60 kg m), C) Marie does more work than Pierre is true.

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Answer:

i dont understand sorry

Single-gene, chromosomal, and multifactorial genetic illnesses can be grouped into these three main categories.

Three factors lead to evolution through natural selection: variation among individuals within a species, heritable variation, and an overpopulation of organisms relative to available resources.

The role that certain genes or gene families play in health and disease is the primary focus of genetic study. Understanding genetic influences and genetic anomalies is necessary to advance health promotion and disease prevention. The study of genetics covers how a person inherits traits from their parents. It explains how features that are straightforward like eye color or complex like disease vulnerability run in families.

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Answer:

125 J

Explanation:

Work done = force * distance

work = 25 * 5

work = 125 J

Answer:

Higher force would be required to stop 5 kg of ball

Explanation:

The force required to stop a moving object depends on its momentum.

The momentum for 8 kg of rolling ball is = 8 kg * 0.2 m/s = 1.6 kgm/s

The momentum for 5 kg of rolling ball is = 8 kg * 1.0 m/s = 5 kgm/s

Hence, momentum of 5 Kg ball is higher than the momentum of 8 Kg of ball

Hence, higher force would be required to stop 5 kg of ball

The frequency of the x-ray is 2.5 × 10¹⁸ Hz. The result is obtained from the formula for frequency.

The x-ray is one of the electromagnetic waves. The equation that relates frequency and wavelength of the x-ray is

c = λ × f

Where c = speed of light, λ = wavelength, and f = frequency.

First, we need to convert the given wavelength from nanometers (nm) to meters (m):
0.12 nm = 0.12 × 10⁻⁹ m

Now, we can rearrange the equation to solve for frequency:
f = c / λ

Next, plug in the values for the speed of light (c = 3 × 10⁸ m/s) and the wavelength (λ = 0.12 × 10⁻⁹ m):
f = (3 × 10⁸ m/s) / (0.12 × 10⁻⁹ m)
f ≈ 2.5 × 10¹⁸ Hz

So, the frequency of an x-ray with a wavelength of 0.12 nm is approximately 2.5 × 10¹⁸ Hz.

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Answer:

When there is sudden movement on the Earth's crust, earthquakes occur. Earthquakes are caused due to sudden lateral or vertical movements in the crust of the Earth. Or we can say that when tectonic plates ride over the other and cause the collision of orogeny or mountain building.

Explanation:

Answer:

In physics, power is the amount of energy transferred or converted per unit time. In the ... Power (physics) ... Angular acceleration / displacement / frequency / velocity. show. Scientists ... Hence the formula is valid for any general situation. ... because they define the maximum performance of a device in terms of velocity ratios

Explanation:

Answer:

weight= density ×volume× 9.8

mass=density×volume

Explanation:

\(weight = 0.12 \times 0.04 \times 0.04 \times 3.14 \times 13600 \\ \times 9.8 = 80.351 \: n \\ \\ mass = 0.12 \times 0.04 \times 0.4 \times 3.14 \times 13600 = \\ = 8.199 \: kg\)

Answer:

the angular acceleration of the gate is approximately 1.61  \(\frac{rad}{s^2}\)

Explanation:

Recall the formula that connects the net torque with the moment of inertia of a rotating object about its axis of rotation, and the angular acceleration (similar to Newton's second law with net force, mass, and linear acceleration):

\(\sum \tau_1=I\,\alpha\)

In our case, both forces contribute to the same direction of torque, so we can add their torques up and get the net torque on the gate:

\(\tau_{net}=(20*2+30*3.5) \,N\,m=145\,\,N\,m\)

Now we use this value to obtain the angular acceleration by using the given moment of inertia of the rotating gate:

\(\sum \tau_1=I\,\alpha\\145\,\,N\.m=(90\,\,kg\,m^2)\,\alpha\\\alpha= \frac{145}{90} \frac{rad}{s^2} = 1.61\, \frac{rad}{s^2}\)

Thermal noise is the unavoidable noise that occurs due to the thermal motion of particles in electrical circuits.

This type of noise is present everywhere in the universe as it is due to the thermal motion of particles.

This thermal motion is the random movement of particles that is a result of their temperature. At higher temperatures, the particles in a substance have a higher thermal motion, which results in more thermal noise.

The electrical circuit has resistance, and when a current flows through it, the resistance causes collisions between electrons and other atoms. This interaction between the moving electrons and atoms in the conductor produces thermal noise.

Thermal noise is proportional to the temperature of the conductor and is independent of the current or voltage of the signal passing through it. The power of thermal noise is given by the formula P = kTB, where k is Boltzmann's constant, T is the temperature in Kelvin, and B is the bandwidth of the signal.

Hence, it can be deduced that thermal noise is an inevitable occurrence present universally, as it arises from the thermal agitation of particles within electrical circuits. This phenomenon pervades various environments and cannot be eliminated.

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Answer:

mass

Explanation:

mass is used in measuring weight. for example kg, tonnes

Answer:

yeah sure

Explanation:

well its s mirror so Ray's are reflected right?

so 1 draw a line passing through the focus ,extend it to hit the mirror, so a reflection occur which is drawn parallel to the principal axis

2 draw a line parallel to the principal axis, extend it to touch the mirror and the a reflection occur which is a line drawn passing through the focus

3 draw a line passing through the centre of curvature, extend it to touch the mirror and the reflection ofcourse passes the same line at first so no need to indicate its reflection

now the point where two line meets is the image

Answer:

which question

Answer:

Oxidation occurs at the anode and reduction occurs at the cathode

Explanation:

Answer:

The particles have more distance in them which impacts the density.

Explanation:

A solid's particles are much more closer together than that of a liquid's particles. Same thing goes for gas particles(they are much more far apart than liquid particles). This is why solids usually are more denser than liquids and gas, due to the way their particles are structured. Hope this helps!

Option B is correct. A negative value as the solution indicates that the image is Virtual.

The Lens formula describes the relationship between the distance of an image (v), the distance of an object (u), and the focal length (f) of the lens in optics.

The lens equation is given below;

\(\frac{1}{v}-\frac{1}{u}=\frac{1}{f}\)

When light beams from the same spot on an item reflect off a mirror and diverge or spread apart, virtual pictures are formed.

Hence option B is correct. A negative value as the solution indicates that the image is Virtual.

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Answer:

B. Virtual

Explanation:

Edge 2023

a)

When a standing wave propagates through a string, the length of the string is a multiple of half the wavelength:

The factor n corresponds to the number of the harmonic. Then, the first harmonic is given by the condition n=1:

As we can see, the wavelength of the first harmonic is two times the length of the string.

Then, the wavelength of the first harmonic can be found by replacing the length L=63cm:

b)

The product of the wavelength and the frequency is the speed of the wave:

Replace λ=126cm=1.26m and f=330Hz to find the speed of the wave on the E-string:

c)

The frequency of the n-th harmonic is given by:

On the other hand:

Then:

Notice that v/2L is the frequency of the first harmonic (fundamental frequency). Then:

Replace the fundamental frequency of 330Hz and n=2,3,4 to find the second, third and fourth harmonic frequencies:

d)

Replace n=3 into the expression for the wavelength of the n-th harmonic to find the wavelength of the third harmonic:

Therefore, the answers are:

a) 126cm

b) 416m/s

c) 660Hz, 990Hz, 1320Hz

d) 42cm

Answer:

1201 lbs

Explanation:

Given that in mammals, the weight of the heart is approximately 0.5% of the total body weight.

Let the weight of the heart of a mammal be H

And the weight of the total body be B

The linear model that can gives the heart weight in terms of the total body weight will be:

H = 0.005B

B.) To find the weight of the heart of a whale whose weight is 2.402 × 105 lbs, substitute the whole weight in the formula.

H = 0.005 × 2.402 × 10^5

H = 1201 lbs

Therefore, the weight of the heart of the whale is 1201 lbs

Answer:

To gradually increase blood flow to the body

Given that the radius of the circular path is r = 142 m and the coefficient of the friction is

The condition for the car to travel safely is

Frictional force = centrifugal force

Here, m is the mass of the car and the acceleration due to gravity is g = 9.8 m/s^2.

v is the maximum speed of the car.